I have an electric car. I would like to monitor and log the current from the 12 volt battery without opening the battery contacts. (Milliamps to perhaps 20 amps.)
Is there any sensor which can do this and provide signal to an arduino processor. Some Hall effect gadget?
Hyundai have put a tiny resistance in series with the negative terminal for some nefarious purpose. I don't know the value, but it would probably be unwise to piggy-back on this resistance.
Monitoring & logging DC current
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Monitoring & logging DC current
We have several current sensor breakouts. All use a sense resistor in series with the current flow and measure the current by the voltage drop (Ohm's Law).
https://www.adafruit.com/?q=ina&sort=BestMatch
There are hall-effect sensors that measure current by the magnetic field. We do not carry any of that type of current sensor.
https://www.adafruit.com/?q=ina&sort=BestMatch
There are hall-effect sensors that measure current by the magnetic field. We do not carry any of that type of current sensor.
Please be positive and constructive with your questions and comments.